Saturday, October 23, 2010

The Wall Street Journal: Big Gates as Ma Yunwei



"Wall Street Journal," Chinese net editor and columnist Liu Gang Wall Street Journal online edition yesterday published a signed article Alibaba Chairman Jack Ma praised than Microsoft founder Bill - Gates great, take a look at the reasons for his bar.

The following is the full text:

Bill - Big Gates as Ma Yunwei

Liu Gang

Bill is a genius, Jack Ma is only partial. Bill easily admitted to Harvard are discarding as disadvantages discharge, he went even squeezed into the little-known exam three years, Hangzhou Teachers College, and thanks from here was able to get a degree in English from the West Lake side of the small fry among the white-collar youth list.

It can be said, Bill - Gates are today, is his family environment and the natural result of their own wisdom, he is only available to its natural advantage into full play the two points clear, even if he steps wrong no founder of Microsoft, which , did not become the world's richest man, he definitely is one of today's American high society successful.

And Ma is not, he has intelligent mind, keen business insight, these advantages may be enough to make him become a successful small business owners to individuals, or the edge of West Lake is very rich black guide, but could not knock him opened the door to the white-collar. Ma was growing in the absence of extraordinary family background, leading to almost exclusively white-collar way that a single-plank bridge entrance. Ma's expertise but had not in the book learning, his life and life is paved with their short-board a rank of the road, his success is not the flow, is a horse comes from. In this sense, Ma great than Gates.

Ma's another valuable point, he was not strong pursuit of equality, social trap out of China. I always thought that the most extreme is the greatest inequality of equality. Because the most extreme of social equality is the most attractive opportunity to achieve equality for all before. Example, an official in feudal times the most attractive development opportunities in life, while the Chinese examination system was feudal official, the entire human society to achieve equality in the extreme. The result? Chinese scholars who have been attracted on the plane, single-plank bridge, most of them certainly have been as good at Xiang Ma, or not very good at book learning, but to live up to this God given equal opportunities, only Haoshouqiongjing life, but to their own advantage to buried. They actually were a strong Anzhuo invisible hand to others with their own weaknesses and strengths of competition, which is the largest human world inequality.

Said Ma valuable is that he himself is from this position of extreme inequality in the lucky winner after the race can easily give up the fruits of victory. He then resolutely rejected the Yahoo, Sina, and other famous sites of well-paid invitation, abandoned by the white-collar workers joined this high-level white-collar workers, even Jinling the most convenient way to embark on the uncertain road of their own business, this is a bit similar to the feudal times to give up the hand Scholars turn to the business as a poor scholar, two thousand years of Chinese feudal society, never produced such an enterprising scholar, this indicates the Ma valuable.

Chinese people always enjoy talking about their studies at Harvard, Gates to give up their own business, with the worth of high value and of talking only to study the old Chinese concept to measure, Gates is almost is, "stoop." Life can be such a development model in the eyes of Americans but is not deviant, of course, that you are a genius. This is why people can not tolerate old son bites Gaici Fu pencil, but acquiesced to his son drop out of school start, because she really knows her son is a genius.

This layer of sense, Gates dropped out of school start this road as Alibaba founder Jack Ma back home that is more dangerous moves, and so it is Ma greater.







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Wednesday, October 20, 2010

c # and class differences in the structure


This directory

Comparison with the structure of the instance of the class

The difference between class and structure

How to choose the structure or class

1. Comparison with the structure of the sample class:

Structure Example:

public struct Person
(
string Name;
int height;
int weight
public bool overWeight ()
(
/ / Implement something
)
)

Class example:
public class TestTime
(
int hours;
int minutes;
int seconds;
public void passtime ()
(
/ / Implementation of behavior
)
)

Call the procedure:

public class Test
(
public static ovid Main
(
Person Myperson = new Person / / declare structure
TestTime Mytime = New TestTime / / declare class
)
)
From the example above we can see, the class declaration and the structure is very similar statements, only qualifier followed struct Haishi class differentiated and when used to define a new structure and definition of new class methods are very similar. Then the specific type and structure is the difference between what?

2. The difference between class and structure

1. Value types and reference types

Structure is a value type: Value types are allocated on the stack address, all the basic types are structure types, such as: int corresponding System.int32 structure, string corresponding system.string structure, by using the structure can create more value types

Classes are reference types: reference types allocated on the heap address

The execution efficiency of the stack implementation efficient than the heap, stack, but limited resources, the logic is not suitable for handling large complex objects. Therefore, as the base type of treatment to treat the structure of small objects, while handling a business logic class

Because the structure is a value type so assignment between structures can create new structure, but the classes are reference types, type assignment is duplicated between the reference

Note:

1. Although the structure of different types and classes, but their base type is an object (object), c # in all types of base types are object

2. Although the structure of the initialization operator also uses the New Structure of the object, but is still allocated on the stack instead of heap, if you do not use the "new" (new), then initialize all the fields before the field will remain unassigned state, and the object is not available

2. Succession

Structure: not from another structure or class inheritance, in itself and can not be inherited, although the structure with sealed statement is not clear, but the structure is implicitly sealed.

Categories: fully scalable, unless shown otherwise, the statement sealed class can inherit other classes and interfaces can also be self-succession

Note: Although the structure can not be inherited, but the structure can be inherited interfaces, methods, and interfaces inherit the same class

For example: Structures of Interfaces

interface IImage
(
void Paint ();
)
struct Picture: IImage
(
public void Paint ()
(
/ / Painting code goes here
)
private int x, y, z; / / other struct members
)

3. Internal structure:

Structure:

No default constructor, but you can add constructor

No destructor

Not abstract and sealed (because they can not inherit)

Not have the protected modifier

Can not use the new initialization

Initialize instance fields in the structure is wrong

Category:

A default constructor

There destructor

You can use abstract and sealed

Are protected modifiers

Must use the new initialization

3. How to choose the structure or class

Discussed the structure and the similarities and differences in class, the following discussion of how to choose the structure or class:

1. Stack space is limited, the number of logical objects, create a class to create structures better than

2. Structure expressed as points, rectangles and color of such lightweight objects, for example, if the statement contains an array of 1000 Point objects, each object will be allocated for the reference to additional memory. In this case, lower cost structure.

3. In the performance level of abstraction and multi-object level, the class is the best option

4. In most cases just a few of the types of data, structure the best option






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Saturday, October 9, 2010

Good Thunder magnetic meet with BT download link



As we all know, BT download speed is not stable enough, when the break when species can not complete download. However, this is not the most serious. From the end of last year, BT download encountered a "more difficult" 鈹?a lot of BT server is off, not only can not find a lot of seed documents, BT Tracker servers disconnect analytical work, which makes the BT download a very big problem. However, recently released a new version of Thunder, in a timely manner to support magnetic link, a good solution to this problem. The advent of magnetic and popular links, marking the era of the past, BT 1.0, BT 2.0 era has arrived.

A profound understanding of magnetic links

In short, magnetic link is a special link, but it is the traditional file-based location or name of the common links (such as http://mp3.server.com/music.mp3) not the same, it is only through the different content of the document The Hash results to generate a plain text of the "digital fingerprint", and use it to identify files. It is similar to common consumer goods packaging bar codes, different is this "digital fingerprints" can be any document from any generation, it also bound to the "magnetic link" without any "central body" of support (for example: BT Tracker server), and high recognition accuracy. Therefore, anyone can generate a Magnet link and make sure to download the file via the link accuracy.

More simply: similar 銆恗agnet:? Xt = urn: sha1: YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C銆?way to "magnet:?" At the beginning of the string is a "magnetic link" icon in web pages are usually shown in Figure 1, like a magnet, it is easy to identify.



Figure 1 Magnetic link icon

Second, many ways to make good use of magnetic links

Although the magnetic link is not so easy to understand, but we want to use Thunder to download it is very easy to do. However, the use of magnetic link, we should pay attention to Thunder in the two settings.

First, select the main interface of Thunder "Tools" 鈫?"Configuration" command, and then in the Open window, click the left "monitor settings" button in the right pane, confirm that select the "Monitor Clipboard" and "magnetic link to download" check box (Figure 2). Just set up this two options, we find that magnetic download link to download and there is not much different from the ordinary, very simple.



Figure 2 Setting the option

1. Direct Download

When we see on the page shown in Figure 1, the beginning of the icon or link to see Magnet (Figure 3), indicating that the "magnetic link" download button or link, direct-click access to magnetic force will begin after the Thunder link information (Figure 4), then you can download the corresponding pop-up window (Figure 5).



Figure 3 Magnetic link found



Figure 4 Magnetic link for information



Figure 5 have already seen the download window

2. Right Download

We can right click on the link in the magnetic, select "Use Thunder download" (Figure 6), and Thunder will start and the establishment of the task.



Figure 6 Right Download Link Resources Magnetic

3. Copy Download

In addition, as long as the Thunder in the background, and opens the clipboard monitoring feature (we have set up earlier), we link directly copy the magnetic content (Figure 7, click the corresponding "Copy Link" button you can), then the Thunder also sensitive to direct pop-up window of Figure 4.



Figure 7 Copy the link to download the magnetic

4. Manual Download

We can click on the main interface of Thunder "New" button, then select the "magnetic link (Magnet) task" command (Figure 8), or directly select the "File" 鈫?"New Task" 鈫?"magnetic link (Magnet) task" command, then enter the magnetic link (Figure 9).



Figure 8 Magnetic manually download link resources



Figure 9, the contents of input magnetic Links

It is worth mentioning that the "magnetic link" to the index through the DHT network to download the file, so in some circumstances may arise, "for magnetic link information" a long time, or for failure problem. As the experience of the current issues related to the accumulation of small, so in addition to try again no clear solution.







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